by High Performance HVAC | Refrigeration |
What you will learn from Refrigeration Pressure Switches
- A question from one of our readers - What are refrigeration pressure switches and how pressure switches protect the refrigeration circuit.
- All about high-pressure refrigeration switches
- All about low-pressure refrigeration switches
- Benefits of refrigeration pressure switches
- Refrigeration Pressure Switch Settings
- Refrigeration Pressure Switch Wiring Diagram
- Lots of related links to help you learn more
Richard - What are pressure switches used in refrigeration circuits and how do pressure switches protect the system from further damage? (more…)
by High Performance HVAC | Direct Digital Controls |
How DDC Status Works – DDC and Status – Is the Device On or Off
This is a current switch sometimes referred to as a CT switch.
The basics of DDC include learning about the status of a fan or a compressor or pump. How does a DDC controller read the status of the device it is monitoring? There are several ways to prove a device is running and some pros and cons of each type of device used to monitor on or off status.
This is a basic DDC guide or reference to help a person understand the basics of DDC status and how it works. When one learns how DDC status works they can improve their troubleshooting skills.
Too many maintenance technicians and others including HVAC technicians don’t understand DDC systems or building automation systems and are therefore crippled when it comes to troubleshooting DDC systems.
High Performance HVAC hopes to change that and help HVAC techs and HVAC maintenance staff learn the basics of DDC systems including how DDC status works. Once someone understands the basics about DDC a light will turn on and they will see that DDC is not really rocket science.
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by High Performance HVAC | Commercial HVAC |
Generators Serving Small Data Center | Critical Facilities - These generators serve a small data center giving the data center backup emergency power in the event of a loss of utility. Most data centers have redundant power from the utility and backup generators. In other words, the utility will provide two sources of utility power from two different power stations or sub-stations so if one source station loses power for whatever reason the system automatically transfers to the backup source of power or the other power or substation. (more…)
by High Performance HVAC | Gas Furnaces |
White Rodgers Gas Furnace Ignition Control Board
Electronic Ignition Gas Furnace Problems Troubleshooting - Gas furnaces are a prevalent form of heat for homes and businesses, and occasionally a gas furnace needs to be repaired because of a problem with the gas furnace.
Since there are many different types of gas furnaces, it is difficult to cover every single possible gas furnace problem that can occur with a gas furnace in one article. We are going to break this theme “gas furnace problems” down into a series of articles with the first one being gas furnace problems with electronic ignition gas furnaces.
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by High Performance HVAC | Gas Furnaces |
What you will learn from
Gas Furnace Troubleshooting and Repair :
- Where to begin your troubleshooting efforts
- Checking the basics
- Checking the blower motor
- Additional furnace component checks for problems
- Lots of valuable related links to give you a closer look so you will learn more about HVAC
Gas Furnace Troubleshooting or Any Furnace Repair should only be done by a qualified HVAC Technician
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by High Performance HVAC | Thermostats |
Blank Display on Thermostat Problem - Screen Disappeared - The thermostat display is our interface with our HVAC equipment. The display lets us know what the temperature is in the house. The display tells us what the desired settings are including letting us know the setpoint setting the temperature.
Some displays give us time, and the newer modern displays show us family photos like a screensaver on our computer. But what happens when the display is not there, or there is a blank thermostat display or no display on the thermostat?
Is it a bad thermostat or something else that caused the display to disappear? What do you do when the thermostat screen is not working? (more…)
